<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <title>时间修饰符</title>
  <script src="../js/vue.js"></script>
  <style>
    * {
      margin-top: 20px;
    }

    .demo1 {
      height: 50px;
      background-color: skyblue;
    }

    .box1 {
      padding: 5px;
      background-color: skyblue;
    }

    .box2 {
      padding: 5px;
      background-color: orange;
    }

    .list {
      height: 200px;
      width: 200px;
      background-color: coral;
      overflow: auto;
      ;
    }

    li {
      height: 100px
    }
  </style>
</head>

<body>
  <div id="root">
    <h2>欢迎来到{{name}}学习</h2>
    <!-- 阻止默认事件 -->
    <a href="http://www.atguigu.com" @click.prevent="showInfo">点我提示信息</a>

    <!-- 阻止冒泡 -->
    <div class="demo1" @click="showInfo">
      <button @click.stop="showInfo">点我提示信息</button>
    </div>

    <!-- 事件只触发一次 -->
    <button @click.once="showInfo">点我提示信息</button>

    <!-- 使用事件的捕获模式 -->
    <div class="box1" @click.capture="showMsg(1)">
      div1
      <div class="box2" @click="showMsg(2)">
        div2
      </div>
    </div>

    <!-- 只有event.target是当前操作的元素时才触发事件 -->
    <div class="demo1" @click.self="showInfo">
      <button @click="showInfo">点我提示信息</button>
    </div>

    <!-- 事件的默认行为立即执行，无需等待时间毁掉执行完毕 -->
    <!-- 滚动条滚动 -->
    <!-- <ul @scroll="demo" class="list"> -->
    <!-- 滚轮滚动 -->
    <ul @wheel.passive="demo" class="list">
      <li>1</li>
      <li>2</li>
      <li>3</li>
      <li>4</li>
    </ul>
  </div>

  <script>
    Vue.config.productionTip = false;

    new Vue({
      el: '#root',
      data: {
        name: '尚硅谷'
      },
      methods: {
        showInfo(e) {
          // e.preventDefault(); // 阻止默认事件
          // e.stopPropagation(); // 阻止冒泡
          alert('同学你好')
        },
        showMsg(msg) {
          console.log(msg)
        },
        demo() {
          for (var i = 0; i < 10000; i++) {
            console.log('@')
          }
        }
      }
    })
  </script>
</body>

</html>